Forecasting the ring current index Dst in real time

Physics

Scientific paper

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Scientific paper

Three models for the evolution of the ring current index Dst are evaluated for real-time implementation. Each model provides the time evolution of Dst in terms of solar wind parameters. Real-time data resources employed by the models are Kyoto Quicklook Dst and ACE real-time solar wind parameters. The implementation described provides a forecast time of about 1h due to propagation of the solar wind from the ACE spacecraft to the Earth. The models are evaluated for simulated real-time data availability, and several error measures are provided. One-hour averages were used in keeping with the standard Dst index. By all measures used the model of O'Brien and McPherron (/1999, Journal of Geophysical Research, in press) performs best.

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